CVE-2022-3336 is a Cross-Site Request Forgery (CSRF) vulnerability identified in the Event Monster WordPress plugin versions prior to 1.2.0. The vulnerability arises because the plugin lacks proper CSRF protection mechanisms when performing the action of deleting visitors. Specifically, an attacker can craft a malicious request that, if executed by an authenticated administrator in the WordPress backend, could trigger the deletion of arbitrary visitor records without the admin's explicit consent. This vulnerability exploits the trust that the plugin places on authenticated users and the absence of anti-CSRF tokens or similar validation methods to verify the legitimacy of the request origin. The CVSS 3.1 base score is 4.3, indicating a medium severity level. The vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N) shows that the attack can be performed remotely over the network without privileges but requires user interaction (the admin must be logged in and visit a malicious page). The impact is limited to integrity (I:L) with no confidentiality or availability impact. No known exploits are currently reported in the wild, and no official patches or updates have been linked, though upgrading to version 1.2.0 or later is implied to resolve the issue. The vulnerability is categorized under CWE-352, which is a common web application security weakness related to CSRF attacks.

For European organizations using WordPress websites with the Event Monster plugin, this vulnerability poses a risk primarily to the integrity of visitor data managed through the plugin. An attacker could trick an authenticated admin into performing unintended deletions of visitor records, potentially disrupting event management and visitor tracking. While the impact does not extend to confidentiality or availability, the loss or manipulation of visitor data could affect business operations, customer relations, and event analytics. In sectors where visitor data is critical, such as event management companies, cultural institutions, or marketing agencies, this could lead to operational inefficiencies or reputational damage. Since exploitation requires an authenticated admin to interact with a malicious page, the risk is mitigated somewhat by the need for user interaction and admin privileges. However, phishing or social engineering campaigns targeting administrators could increase the likelihood of successful exploitation. The absence of known exploits in the wild reduces immediate threat levels but does not eliminate future risk. Organizations with high reliance on the Event Monster plugin should consider this vulnerability seriously, especially if they have a large or sensitive visitor base.

1. Immediate upgrade: Ensure that the Event Monster plugin is updated to version 1.2.0 or later, where the CSRF vulnerability is addressed. 2. Admin access controls: Limit the number of users with administrative privileges on WordPress sites to reduce the attack surface. 3. Implement web application firewalls (WAFs): Configure WAF rules to detect and block suspicious POST requests that attempt to delete visitors without proper CSRF tokens. 4. User training: Educate administrators about the risks of CSRF attacks and the importance of avoiding clicking on suspicious links or visiting untrusted websites while logged into the WordPress admin panel. 5. Monitor logs: Regularly review server and application logs for unusual deletion activities or unexpected POST requests targeting visitor deletion endpoints. 6. Employ security plugins: Use WordPress security plugins that add additional CSRF protections or harden the admin interface. 7. Network segmentation: Restrict administrative access to the WordPress backend via VPN or IP whitelisting to reduce exposure to remote CSRF attacks. These measures, combined with prompt patching, will significantly reduce the risk posed by this vulnerability.